The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 2004
Filed:
Feb. 05, 2003
Hirohisa Ishino, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
There is provided an illuminator to emit trichromatic light. It includes a lamp ( ) which emits trichromatic light including components whose wavelengths correspond to three primary colors, respectively, and a wavelength-selective optical aperture filter ( ) provided at the side of the lamp ( ) from which the light of three primary colors go out and consisting of zones working as predetermined optical apertures of which one selectively attenuates or shields a component included in the trichromatic light and having a wavelength corresponding to at least one of the three primary colors while the others allow the light components whose wavelengths correspond to the other primary colors to pass through.